20020+0257 HEI 818

 
 
20h 02m 00.21s +02 56' 31.6" P.A. 28 sep 1.3 mag 10.80,11.40 Sp A3
 
 
Coord 2000
20020+0257
Discov num
HEI 818
Comp
Coord arcsec 2000
20 02 00.21 +02 56 31.6
Date first
1990
Date last
1994
Obs
2
Pa first
27
Pa last
28
P.A. Now (θ)
28°
Sep first
1.4
Sep last
1.3
Sep. Now (ρ)
1.3"
Mag pri
10.80
Mag sec
11.40
delta mag (ΔM)
0.6
Spectral class
A3 (white)
Pri motion ra
-008
Sec motion ra
Pri motion dec
-011
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
27.8
Precise sep
1.29
Constellation
Aquila
Tycho2
0498-02042-1
HD
357703
last precise pa
27.8
last precise sep
1.29
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20020+0257 HEI 818 1994 2 28 1.3 10.80 11.40 200200.21+025631.6

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